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Meccanici F, Bom A, Knol W, Gökalp A, Thijssen C, Bekkers J, Geuzebroek G, Mokhles M, van Kimmenade R, Budde R, Takkenberg J, Roos-Hesselink J. Male-female differences in thoracic aortic diameters at presentation of acute type A aortic dissection. IJC HEART & VASCULATURE 2023; 49:101290. [PMID: 37942298 PMCID: PMC10628350 DOI: 10.1016/j.ijcha.2023.101290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/17/2023] [Accepted: 10/22/2023] [Indexed: 11/10/2023]
Abstract
Background Acute type A aortic dissection (ATAAD) is a highly lethal event, associated with aortic dilatation. It is not well known if patient height, weight or sex impact the thoracic aortic diameter (TAA) at ATAAD. The study aim was to identify male-female differences in TAA at ATAAD presentation. Methods This retrospective cross-sectional study analysed all adult patients who presented with ATAAD between 2007 and 2017 in two tertiary care centres and underwent contrast enhanced computed tomography (CTA) before surgery. Absolute aortic diameters were measured at the sinus of Valsalva (SoV), ascending (AA) and descending thoracic aorta (DA) using double oblique reconstruction, and indexed for body surface area (ASI) and height (AHI). Z-scores were calculated using the Campens formula. Results In total, 59 % (181/308) of ATAAD patients had CT-scans eligible for measurements, with 82 female and 99 male patients. Females were significantly older than males (65.5 ± 12.4 years versus 60.3 ± 2.3, p = 0.024). Female patients had larger absolute AA diameters than male patients (51.0 mm [47.0-57.0] versus 49.0 mm [45.0-53.0], p = 0.023), and larger ASI and AHI at all three levels. Z-scores for the SoV and AA were significantly higher for female patients (2.99 ± 1.66 versus 1.34 ± 1.77, p < 0.001 and 5.27 [4.38-6.26] versus 4.06 [3.14-5.02], p < 0.001). After adjustment for important clinical factors, female sex remained associated with greater maximal TAA (p = 0.019). Conclusion Female ATAAD patients had larger absolute ascending aortic diameters than males, implying a distinct timing in disease presentation or selection bias. Translational studies on the aortic wall and studies on growth patterns should further elucidate these sex differences.
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Affiliation(s)
- F. Meccanici
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - A.W. Bom
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - W.G. Knol
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Centre, Rotterdam, Netherlands
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - A.L. Gökalp
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - C.G.E. Thijssen
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
- Department of Cardiology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - J.A. Bekkers
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - G.S.C. Geuzebroek
- Department of Cardiothoracic Surgery, Radboud University Medical Centre, Nijmegen, Netherlands
| | - M.M. Mokhles
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
- Department of Cardiothoracic Surgery, Utrecht University Medical Centre, Utrecht, Netherlands
| | - R.R.J. van Kimmenade
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
- Department of Cardiology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - R.P.J. Budde
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - J.J.M. Takkenberg
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - J.W. Roos-Hesselink
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
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2
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Park S, Kwon M, Nam H, Huh H. Interpolation time-optimized aortic pulse wave velocity estimation by 4D flow MRI. Sci Rep 2023; 13:16484. [PMID: 37777620 PMCID: PMC10542805 DOI: 10.1038/s41598-023-43799-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 09/28/2023] [Indexed: 10/02/2023] Open
Abstract
Four-dimensional flow magnetic resonance imaging-based pulse wave velocity (4D flow PWV) estimation is a promising tool for measuring regional aortic stiffness for non-invasive cardiovascular disease screening. However, the effect of variations in the shape of flow waveforms on 4D flow PWV measurements remains unclear. In this study, 4D flow PWV values were compared using cross-correlation algorithm with different interpolation times (iTs) based on flow rate and beat frequency. A critical iT (iTCrit) was proposed from in vitro study using flexible and stiff phantom models to simultaneously achieve a low difference and a low computation time. In vivo 4D flow PWV values from six healthy volunteers were also compared between iTCrit and the conventionally used interpolation time of 1 ms (iT1 ms). The results indicated that iTCrit reduced the mean difference of in vitro 4D flow PWV values by 19%, compared to iT1 ms. In addition, iTCrit measured in vivo 4D flow PWV, showing differences similar to those obtained with iT1 ms. A difference estimation model was proposed to retrospectively estimate potential differences of 4D flow PWV using known values of PWV and the used iT. This study would be helpful for understanding the differences of PWV generated by physiological changes and time step of obtained flow waveforms.
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Affiliation(s)
- Sungho Park
- Daegu-Gyeongbuk Medical Innovation Foundation, Medical Device Development Center, Daegu, 41061, South Korea
- Institute of Medical Devices, Kangwon National University, Chuncheon, South Korea
- Department of Radiology, Section of Pediatric Radiology, Children's Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Minseong Kwon
- Daegu-Gyeongbuk Medical Innovation Foundation, Medical Device Development Center, Daegu, 41061, South Korea
| | - Hyojin Nam
- Daegu-Gyeongbuk Medical Innovation Foundation, Medical Device Development Center, Daegu, 41061, South Korea
| | - Hyungkyu Huh
- Daegu-Gyeongbuk Medical Innovation Foundation, Medical Device Development Center, Daegu, 41061, South Korea.
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3
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Ghazy T, Kirstein B, Tomala J, Kalaja I, Herold J, Irqsusi M, Rastan A, Karl Lackner H, Weiss N, Mahlmann A. MRI detects increased aortic stiffening and myocardial dysfunction after TEVAR of blunt injury in young patients. VASA 2023; 52:317-324. [PMID: 37461314 DOI: 10.1024/0301-1526/a001084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Background: Thoracic endovascular aortic repair (TEVAR) is a well-established technique for the management of blunt thoracic aortic injury (BTAI). Despite improvements in vascular imaging, graft material properties, and implant techniques, stent-graft deployment artificially induces aortic stiffening. This study aimed to evaluate the midterm effect of thoracic endovascular aortic repair after blunt thoracic aortic injury on aortic stiffness and cardiac function in young patients using cardiovascular magnetic resonance (CMR) imaging. Patients and methods: From all patients who underwent TEVAR for BTAI between 2009 and 2019 in a single institution, 10 patients with no other comorbidities affecting arterial stiffness were sex-, age-, height-, and body surface area-matched to 10 healthy controls. Comprehensive CMR examination was performed in all controls and patients. The mean follow-up period was 5.4±1.8 years; the mean age at the time of TEVAR was 30.3±8.7 years. Results: Four patients who underwent TEVAR developed arterial hypertension. 4D flow CMR-based analysis demonstrated higher global pulse wave velocity (PWV) in TEVAR patients than in controls (p=0.012). Segmental analysis showed a higher PWV in the descending and abdominal aorta. The indexed diameter of the ascending aorta was larger in TEVAR patients than in controls (p=0.007). The CINE acquisitions demonstrated increased left ventricular myocardial thickness (p<0.001). The 3D global diastolic strain rate and diastolic longitudinal velocity (e') decreased, and the A-wave velocity increased. Native myocardial T1 values were significantly higher in TEVAR patients (p=0.037). Conclusions: Young patients with TEVAR after BTAI are at an increased risk of developing vascular and myocardial dysfunction due to increased aortic stiffness. CMR follow-up allows for a comprehensive and radiation-free evaluation of vascular stiffness and associated myocardial changes, especially at the early and subclinical stages.
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Affiliation(s)
- Tamer Ghazy
- Department of Cardiac and Thoracic Vascular Surgery, Marburg University Hospital, Germany
| | - Bettina Kirstein
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Germany
| | - Jakub Tomala
- Department of Electrophysiology, Heart Center, Technische Universität Dresden, Germany
| | - Igli Kalaja
- Center of Cardiology, Cardiology III - Angiology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Jörg Herold
- Department of Vascular Medicine - Angiology, Klinikum Darmstadt GmbH, Germany
| | - Marc Irqsusi
- Department of Cardiac and Thoracic Vascular Surgery, Marburg University Hospital, Germany
| | - Ardawan Rastan
- Department of Cardiac and Thoracic Vascular Surgery, Marburg University Hospital, Germany
| | - Helmut Karl Lackner
- Division of Physiology, Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Medical University of Graz, Austria
| | - Norbert Weiss
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | - Adrian Mahlmann
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
- Center for Vascular Medicine, Clinic of Angiology, St.-Josefs-Hospital, Katholische Krankenhaus Hagen gem. GmbH, Germany
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4
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Chen C, Bao W, Chen C, Chen L, Wang L, Gong H. Association between estimated pulse wave velocity and all-cause mortality in patients with coronary artery disease: a cohort study from NHANES 2005-2008. BMC Cardiovasc Disord 2023; 23:412. [PMID: 37605157 PMCID: PMC10441734 DOI: 10.1186/s12872-023-03435-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 08/07/2023] [Indexed: 08/23/2023] Open
Abstract
BACKGROUND Arterial stiffness has been shown to be an independent risk factor for adverse events and all-cause mortality in patients. Although PWV is the gold standard for pulse wave velocity, its application in clinical practice is limited by the high cost and complexity. ePwv is a new, simple, non-invasive indicator of arterial stiffness. The aim of this study was to assess the relationship between ePwv and all-cause mortality in patients with coronary artery disease. METHODS This is a cohort study, selected from NHANES 2005 to 2008, 402 patients with coronary artery disease were included. The ePWV was divided into two groups and KM survival curves were used to calculate cumulative mortality in patients with coronary artery disease. Restricted cubic spline were used to represent the relationship between ePWV and all-cause mortality in patients with coronary artery disease. Cox regression was used to diagnose the relationship between ePwv and all-cause mortality. RESULTS The mean age of the study subjects was 68.5 ± 11.8 years, of which 282 (70.1%) were men and 120 (29.9%) were women. During 180 months of follow-up, 160 all-cause mortality occurred. KM survival curves indicated that all-cause mortality increased with increasing ePWV. The relationship between ePWV and all-cause mortality in patients with coronary artery disease was verified by cox models. Patients in higher ePWV tertile tended to have higher all-cause mortality. After complete multivariate adjustment, an increase in ePWV was positively associated with all-cause mortality (HR = 1.180, 95% confidence interval (CI): 1.056-1.320). The multivariate-adjusted HR and 95% CI for the highest ePWV tertile was 1.582 (95% CI: 0.968-2.587) compared to the lowest tertile. In addition, the association between ePWV and mortality was visualized employing restricted spline curves, in which we found curves indicating a possible threshold for the effect of ePWV on all-cause mortality, with HR less than 1 when ePWV was less than 11.15 m/s; thereafter, there was a tendency for HR to increase with enhanced ePWV. Subgroup analysis showed that the correlation between ePWV and mortality persisted in population subgroups. CONCLUSION Our findings suggest that higher ePWV is associated with increased all-cause mortality in patients with coronary artery disease, particularly when ePWV exceeds 11.15 m/s.
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Affiliation(s)
- Chunwei Chen
- Graduate School of Xuzhou Medical University, Xuzhou, Jiangsu, China
- XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Wei Bao
- Graduate School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Chengwen Chen
- Graduate School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Lingyao Chen
- Graduate School of Xuzhou Medical University, Xuzhou, Jiangsu, China
- XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Liudi Wang
- Graduate School of Xuzhou Medical University, Xuzhou, Jiangsu, China
- XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Haibin Gong
- XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China.
- Xuzhou Cardiovascular Disease Institute, Xuzhou, Jiangsu, China.
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5
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Nguyen LA, Houriez-Gombaud-Saintonge S, Puymirat E, Gencer U, Dietenbeck T, Bouaou K, De Cesare A, Bollache E, Mousseaux E, Kachenoura N, Soulat G. Aortic Stiffness Measured from Either 2D/4D Flow and Cine MRI or Applanation Tonometry in Coronary Artery Disease: A Case-Control Study. J Clin Med 2023; 12:jcm12113643. [PMID: 37297837 DOI: 10.3390/jcm12113643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/15/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Aortic stiffness can be evaluated by aortic distensibility or pulse wave velocity (PWV) using applanation tonometry, 2D phase contrast (PC) MRI and the emerging 4D flow MRI. However, such MRI tools may reach their technical limitations in populations with cardiovascular disease. Accordingly, this work focuses on the diagnostic value of aortic stiffness evaluated either by applanation tonometry or MRI in high-risk coronary artery disease (CAD) patients. METHODS 35 patients with a multivessel CAD and a myocardial infarction treated 1 year before were prospectively recruited and compared with 18 controls with equivalent age and sex distribution. Ascending aorta distensibility and aortic arch 2D PWV were estimated along with 4D PWV. Furthermore, applanation tonometry carotid-to-femoral PWV (cf PWV) was recorded immediately after MRI. RESULTS While no significant changes were found for aortic distensibility; cf PWV, 2D PWV and 4D PWV were significantly higher in CAD patients than controls (12.7 ± 2.9 vs. 9.6 ± 1.1; 11.0 ± 3.4 vs. 8.0 ± 2.05 and 17.3 ± 4.0 vs. 8.7 ± 2.5 m·s-1 respectively, p < 0.001). The receiver operating characteristic (ROC) analysis performed to assess the ability of stiffness indices to separate CAD subjects from controls revealed the highest area under the curve (AUC) for 4D PWV (0.97) with an optimal threshold of 12.9 m·s-1 (sensitivity of 88.6% and specificity of 94.4%). CONCLUSIONS PWV estimated from 4D flow MRI showed the best diagnostic performances in identifying severe stable CAD patients from age and sex-matched controls, as compared to 2D flow MRI PWV, cf PWV and aortic distensibility.
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Affiliation(s)
- Lan-Anh Nguyen
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
| | | | - Etienne Puymirat
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
| | - Umit Gencer
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
| | - Thomas Dietenbeck
- Laboratoire d'Imagerie Biomédicale, Sorbonne Université, INSERM, CNRS, F-75006 Paris, France
| | - Kevin Bouaou
- Laboratoire d'Imagerie Biomédicale, Sorbonne Université, INSERM, CNRS, F-75006 Paris, France
| | - Alain De Cesare
- Laboratoire d'Imagerie Biomédicale, Sorbonne Université, INSERM, CNRS, F-75006 Paris, France
| | - Emilie Bollache
- Laboratoire d'Imagerie Biomédicale, Sorbonne Université, INSERM, CNRS, F-75006 Paris, France
| | - Elie Mousseaux
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
| | - Nadjia Kachenoura
- Laboratoire d'Imagerie Biomédicale, Sorbonne Université, INSERM, CNRS, F-75006 Paris, France
| | - Gilles Soulat
- Université Paris Cité, PARCC, INSERM, F-75015 Paris, France
- Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, F-75015 Paris, France
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6
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Bianchini E, Lønnebakken MT, Wohlfahrt P, Piskin S, Terentes‐Printzios D, Alastruey J, Guala A. Magnetic Resonance Imaging and Computed Tomography for the Noninvasive Assessment of Arterial Aging: A Review by the VascAgeNet COST Action. J Am Heart Assoc 2023; 12:e027414. [PMID: 37183857 PMCID: PMC10227315 DOI: 10.1161/jaha.122.027414] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Magnetic resonance imaging and computed tomography allow the characterization of arterial state and function with high confidence and thus play a key role in the understanding of arterial aging and its translation into the clinic. Decades of research into the development of innovative imaging sequences and image analysis techniques have led to the identification of a large number of potential biomarkers, some bringing improvement in basic science, others in clinical practice. Nonetheless, the complexity of some of these biomarkers and the image analysis techniques required for their computation hamper their widespread use. In this narrative review, current biomarkers related to aging of the aorta, their founding principles, the sequence, and postprocessing required, and their predictive values for cardiovascular events are summarized. For each biomarker a summary of reference values and reproducibility studies and limitations is provided. The present review, developed in the COST Action VascAgeNet, aims to guide clinicians and technical researchers in the critical understanding of the possibilities offered by these advanced imaging modalities for studying the state and function of the aorta, and their possible clinically relevant relationships with aging.
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Affiliation(s)
| | - Mai Tone Lønnebakken
- Department of Clinical ScienceUniversity of BergenBergenNorway
- Department of Heart DiseaseHaukeland University HospitalBergenNorway
| | - Peter Wohlfahrt
- Department of Preventive CardiologyInstitute for Clinical and Experimental MedicinePragueCzech Republic
- Centre for Cardiovascular PreventionCharles University Medical School I and Thomayer HospitalPragueCzech Republic
- Department of Medicine IICharles University in Prague, First Faculty of MedicinePragueCzech Republic
| | - Senol Piskin
- Department of Mechanical Engineering, Faculty of Engineering and Natural SciencesIstinye UniversityIstanbulTurkey
- Modeling, Simulation and Extended Reality LaboratoryIstinye UniversityIstanbulTurkey
| | - Dimitrios Terentes‐Printzios
- First Department of Cardiology, Hippokration Hospital, Athens Medical SchoolNational and Kapodistrian University of AthensGreece
| | - Jordi Alastruey
- School of Biomedical Engineering and Imaging SciencesKing’s College LondonLondonUK
| | - Andrea Guala
- Vall d’Hebron Institut de Recerca (VHIR)BarcelonaSpain
- CIBER‐CV, Instituto de Salud Carlos IIIMadridSpain
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7
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Loose S, Solou D, Strecker C, Hennemuth A, Hüllebrand M, Grundmann S, Asmussen A, Treppner M, Urbach H, Harloff A. Characterization of aortic aging using 3D multi-parametric MRI-long-term follow-up in a population study. Sci Rep 2023; 13:6285. [PMID: 37072440 PMCID: PMC10111081 DOI: 10.1038/s41598-023-33219-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 04/10/2023] [Indexed: 05/03/2023] Open
Abstract
We comprehensively studied morphological and functional aortic aging in a population study using modern three-dimensional MR imaging to allow future comparison in patients with diseases of the aortic valve or aorta. We followed 80 of 126 subjects of a population study (20 to 80 years of age at baseline) using the identical methodology 6.0 ± 0.5 years later. All underwent 3 T MRI of the thoracic aorta including 3D T1 weighted MRI (spatial resolution 1 mm3) for measuring aortic diameter and plaque thickness and 4D flow MRI (spatial/temporal resolution = 2 mm3/20 ms) for calculating global and regional aortic pulse wave velocity (PWV) and helicity of aortic blood flow. Mean diameter of the ascending aorta (AAo) decreased and plaque thickness increased significantly in the aortic arch (AA) and descending aorta (DAo) in females. PWV of the thoracic aorta increased (6.4 ± 1.5 to 7.0 ± 1.7 m/s and 6.8 ± 1.5 to 7.3 ± 1.8 m/s in females and males, respectively) over time. Local normalized helicity volumes (LNHV) decreased significantly in the AAo and AA (0.33 to 0.31 and 0.34 to 0.32 in females and 0.34 to 0.32 and 0.32 to 0.28 in males). By contrast, helicity increased significantly in the DAo in both genders (0.28 to 0.29 and 0.29 to 0.30, respectively). 3D MRI was able to characterize changes in aortic diameter, plaque thickness, PWV and helicity during six years in our population. Aortic aging determined by 3D multi-parametric MRI is now available for future comparisons in patients with diseases of the aortic valve or aorta.
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Affiliation(s)
- Sophie Loose
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Demetris Solou
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Strecker
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Anja Hennemuth
- Fraunhofer MEVIS, Bremen, Germany
- Institute of Computer-Assisted Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Markus Hüllebrand
- Fraunhofer MEVIS, Bremen, Germany
- Institute of Computer-Assisted Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Grundmann
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Cardiology and Angiology I, Heart Center Freiburg University, University of Freiburg, Freiburg, Germany
| | - Alexander Asmussen
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Cardiology and Angiology I, Heart Center Freiburg University, University of Freiburg, Freiburg, Germany
| | - Martin Treppner
- Institute of Medical Biometry and Statistics, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany
| | - Horst Urbach
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Neuroradiology, Medical Center, University of Freiburg, Freiburg, Germany
| | - Andreas Harloff
- Department of Neurology and Neurophysiology, University Medical Center Freiburg, University of Freiburg, Breisacher Straße 64, 79106, Freiburg, Germany.
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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8
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Huellebrand M, Jarmatz L, Manini C, Laube A, Ivantsits M, Schulz-Menger J, Nordmeyer S, Harloff A, Hansmann J, Kelle S, Hennemuth A. Radiomics-based aortic flow profile characterization with 4D phase-contrast MRI. Front Cardiovasc Med 2023; 10:1102502. [PMID: 37077748 PMCID: PMC10106758 DOI: 10.3389/fcvm.2023.1102502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 03/06/2023] [Indexed: 04/05/2023] Open
Abstract
4D PC MRI of the aorta has become a routinely available examination, and a multitude of single parameters have been suggested for the quantitative assessment of relevant flow features for clinical studies and diagnosis. However, clinically applicable assessment of complex flow patterns is still challenging. We present a concept for applying radiomics for the quantitative characterization of flow patterns in the aorta. To this end, we derive cross-sectional scalar parameter maps related to parameters suggested in literature such as throughflow, flow direction, vorticity, and normalized helicity. Derived radiomics features are selected with regard to their inter-scanner and inter-observer reproducibility, as well as their performance in the differentiation of sex-, age- and disease-related flow properties. The reproducible features were tested on user-selected examples with respect to their suitability for characterizing flow profile types. In future work, such signatures could be applied for quantitative flow assessment in clinical studies or disease phenotyping.
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Affiliation(s)
- Markus Huellebrand
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Digital Medicine MEVIS, Berlin, Germany
- Correspondence: Markus Huellebrand
| | - Lina Jarmatz
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Chiara Manini
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Ann Laube
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Matthias Ivantsits
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Jeanette Schulz-Menger
- Charité Universitätsmedizin Berlin, Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center, a joint cooperation between the Charité Universitätsmedizin Berlin and the Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
- Helios Hospital Berlin-Buch, Department of Cardiology and Nephrology, Berlin, Germany
| | - Sarah Nordmeyer
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Andreas Harloff
- Department of Neurology, University Medical Center Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jochen Hansmann
- Department of Radiology, Theresienkrankenhaus und St. Hedwig-Klinik, Mannheim, Germany
| | - Sebastian Kelle
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Anja Hennemuth
- Deutsches Herzzentrum der Charité, Berlin, Germany
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- Fraunhofer Institute for Digital Medicine MEVIS, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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9
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Schafstedde M, Jarmatz L, Brüning J, Hüllebrand M, Nordmeyer S, Harloff A, Hennemuth A. Population-based reference values for 4D flow MRI derived aortic blood flow parameters. Physiol Meas 2023; 44. [PMID: 36735968 DOI: 10.1088/1361-6579/acb8fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 02/03/2023] [Indexed: 02/05/2023]
Abstract
Objective. This study assesses age-related differences of thoracic aorta blood flow profiles and provides age- and sex-specific reference values using 4D flow cardiovascular magnetic resonance (CMR) data.Approach. 126 volunteers (age 20-80 years, female 51%) underwent 4D flow CMR and 12 perpendicular analysis planes in the thoracic aorta were specified. For these planes the following parameters were evaluated: body surface area-adjusted aortic area (A'), normalized flow displacement (NFD), the degree of wall parallelism (WPD), the minimal relative cross-sectional area through which 80% of the volume flow passes (A80) and the angle between flow direction and centerline (α).Main results. Age-related differences in blood flow parameters were seen in the ascending aorta with higher values for NFD and angle and lower values for WPD and A80 in older subjects. All parameters describing blood flow patterns correlated with the cross-sectional area in the ascending aorta. No relevant sex-differences regarding blood flow profiles were found.Significance. These age- and sex-specific reference values for quantitative parameters describing blood flow within the aorta might help to study the clinical relevance of flow profiles in the future.
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Affiliation(s)
- Marie Schafstedde
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany
| | - Lina Jarmatz
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany
| | - Jan Brüning
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany
| | - Markus Hüllebrand
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Fraunhofer MEVIS, Bremen, Germany
| | - Sarah Nordmeyer
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Department of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany
| | - Andreas Harloff
- Department of Neurology, University Medical Center Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Germany
| | - Anja Hennemuth
- Institute of Congenital Heart Disease, German Heart Center Charité, Berlin, Germany.,Partner Site Berlin, German Centre for Cardiovascular Research (DZHK), Berlin, Germany.,Fraunhofer MEVIS, Bremen, Germany
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10
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Rabineau J, Issertine M, Hoffmann F, Gerlach D, Caiani EG, Haut B, van de Borne P, Tank J, Migeotte PF. Cardiovascular deconditioning and impact of artificial gravity during 60-day head-down bed rest—Insights from 4D flow cardiac MRI. Front Physiol 2022; 13:944587. [PMID: 36277205 PMCID: PMC9586290 DOI: 10.3389/fphys.2022.944587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022] Open
Abstract
Microgravity has deleterious effects on the cardiovascular system. We evaluated some parameters of blood flow and vascular stiffness during 60 days of simulated microgravity in head-down tilt (HDT) bed rest. We also tested the hypothesis that daily exposure to 30 min of artificial gravity (1 g) would mitigate these adaptations. 24 healthy subjects (8 women) were evenly distributed in three groups: continuous artificial gravity, intermittent artificial gravity, or control. 4D flow cardiac MRI was acquired in horizontal position before (−9 days), during (5, 21, and 56 days), and after (+4 days) the HDT period. The false discovery rate was set at 0.05. The results are presented as median (first quartile; third quartile). No group or group × time differences were observed so the groups were combined. At the end of the HDT phase, we reported a decrease in the stroke volume allocated to the lower body (−30% [−35%; −22%]) and the upper body (−20% [−30%; +11%]), but in different proportions, reflected by an increased share of blood flow towards the upper body. The aortic pulse wave velocity increased (+16% [+9%; +25%]), and so did other markers of arterial stiffness (CAVI; CAVI0). In males, the time-averaged wall shear stress decreased (−13% [−17%; −5%]) and the relative residence time increased (+14% [+5%; +21%]), while these changes were not observed among females. Most of these parameters tended to or returned to baseline after 4 days of recovery. The effects of the artificial gravity countermeasure were not visible. We recommend increasing the load factor, the time of exposure, or combining it with physical exercise. The changes in blood flow confirmed the different adaptations occurring in the upper and lower body, with a larger share of blood volume dedicated to the upper body during (simulated) microgravity. The aorta appeared stiffer during the HDT phase, however all the changes remained subclinical and probably the sole consequence of reversible functional changes caused by reduced blood flow. Interestingly, some wall shear stress markers were more stable in females than in males. No permanent cardiovascular adaptations following 60 days of HDT bed rest were observed.
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Affiliation(s)
- Jeremy Rabineau
- LPHYS, Département de Cardiologie, Université Libre de Bruxelles, Brussels, Belgium
- TIPs, École Polytechnique de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
- *Correspondence: Jeremy Rabineau,
| | - Margot Issertine
- LPHYS, Département de Cardiologie, Université Libre de Bruxelles, Brussels, Belgium
| | - Fabian Hoffmann
- Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany
| | - Darius Gerlach
- Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany
| | - Enrico G. Caiani
- Electronic, Information and Biomedical Engineering Department, Politecnico di Milano, Milan, Italy
| | - Benoit Haut
- TIPs, École Polytechnique de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | | | - Jens Tank
- Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany
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11
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Fialka NM, Bozso SJ, El-Andari R, Kang JJ, O'Connell A, Moon MC, Macarthur R, Nagendran J. Sex differences in acute type A aortic dissection: a systematic review and meta-analysis. THE JOURNAL OF CARDIOVASCULAR SURGERY 2022; 63:632-644. [PMID: 35687063 DOI: 10.23736/s0021-9509.22.12273-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
INTRODUCTION The objective of this study is to provide a comprehensive comparison of outcomes following acute type A aortic dissection (ATAAD) repair in males and females. EVIDENCE ACQUISITION PubMed, Medline, and Web of Science were systematically searched by two authors for studies published from January 1st, 2000, to May 10th, 2021. Overall, 2405 articles were screened, and 16 were included in this review. Meta-analysis of the compiled data was performed. EVIDENCE SYNTHESIS Pooled estimates indicated no difference in operative (odds ratio (OR) 1.00, 95% confidence interval (CI) 0.59-1.67, P=0.99, I2=52%), in-hospital (OR 0.78, 95% CI 0.56-1.08; P=0.13, I2=57%), and 30-day mortality (OR 1.09, 95% CI 0.83-1.43, P=0.52, I2=45%) between the sexes. However, males had significantly reduced 5-year mortality rates (OR 0.71, 95% CI 0.51-1.00, P=0.05, I2=45%). There was no difference between sexes in rates of postoperative stroke (OR 1.07, 95% CI 0.86-1.33, P=0.54, I2=0%), atrial fibrillation (OR 0.99, 95% CI 0.82-1.19, P=0.92, I2=0%), as well as mesenteric or limb ischemia (OR 0.73, 95% CI 0.22-2.43, P=0.61, I2=77%; OR 0.83, 95% CI 0.30-2.30, P=0.72, I2=76%, respectively). Males did experience significantly increased rates of acute renal failure and reoperation (OR 1.35, 95% CI 1.16-1.56, P=0.0001, I2=29%; OR 1.40, 95% CI 1.09-1.81, P=0.010, I2=42%). CONCLUSIONS Composite analysis indicates that early mortality does not differ between the sexes; however, late outcomes favor males. Differences in preoperative presentation and subsequent procedure selection between the sexes likely contribute to the disparity in late outcomes. Decision-making for surgical treatment of ATAAD should account for sex-specific risk factors.
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Affiliation(s)
- Nicholas M Fialka
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Sabin J Bozso
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Ryaan El-Andari
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Jimmy J Kang
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Andrew O'Connell
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Michael C Moon
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Roderick Macarthur
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Jeevan Nagendran
- Division of Cardiac Surgery, Department of Surgery, University of Alberta, Edmonton, AB, Canada -
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12
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Jarvis K, Scott MB, Soulat G, Elbaz MSM, Barker AJ, Carr JC, Markl M, Ragin A. Aortic Pulse Wave Velocity Evaluated by 4D Flow MRI Across the Adult Lifespan. J Magn Reson Imaging 2022; 56:464-473. [PMID: 35001455 PMCID: PMC9387532 DOI: 10.1002/jmri.28045] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Evaluation of aortic stiffness by pulse wave velocity (PWV) across the adult lifespan is needed to better understand normal aging in women and men. PURPOSE To characterize PWV in the thoracic aorta using 4D flow MRI in an age- and sex-stratified cohort of healthy adults. STUDY TYPE Retrospective. POPULATION Ninety nine healthy participants (age: 46 ± 15 [19-79] years, 50% female), divided into young adults (<45 years) (N = 48), midlife (45-65 years) (N = 37), and later life (>65 years) (N = 14) groups. FIELD STRENGTH/SEQUENCE 1.5 T or 3 T, 2D cine bSSFP, 4D flow MRI. ASSESSMENT Cardiac functional parameters of end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV) and myocardial mass were assessed by 2D cine bSSFP. PWV and aortic blood flow velocity were assessed by 4D flow MRI. Reproducibility of PWV was evaluated in a subset of nine participants. STATISTICAL TESTS Analysis of variance, Pearson's correlation coefficient (r), linear regression, intraclass correlation coefficient (ICC). A P value < 0.05 was considered statistically significant. RESULTS PWV increased significantly with age (young adults: 5.4 ± 0.9 m/sec, midlife: 7.2 ± 1.1 m/sec, and later life: 9.4 ± 1.8 m/sec) (r = 0.79, slope = 0.09 m/sec/year). PWV did not differ in women and men in entire sample (P = 0.40) or within age groups (young adults: P = 0.83, midlife: P = 0.17, and later life: P = 0.96). PWV was significantly correlated with EDV (r = -0.29), ESV (r = -0.23), SV (r = -0.28), myocardial mass (r = 0.21), and mean aortic blood flow velocity (r = -0.62). In the test-retest subgroup (N = 9), PWV was 6.7 ± 1.5 [4.4-9.3] m/sec and ICC = 0.75. DATA CONCLUSION 4D flow MRI quantified higher aortic PWV with age, by approximately 1 m/sec per decade, and significant differences between young adults, midlife and later life. Reproducibility analysis showed good test-retest agreement. Increased PWV was associated with decline in cardiac function and reduced aortic blood flow velocity. This study demonstrates the utility of 4D flow MRI-derived aortic PWV for studying aging. EVIDENCE LEVEL 2 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Kelly Jarvis
- Radiology, Northwestern University, Chicago, IL, USA
| | - Michael B. Scott
- Radiology, Northwestern University, Chicago, IL, USA
- Biomedical Engineering, Northwestern University, Evanston, IL, USA
| | - Gilles Soulat
- Radiology, Northwestern University, Chicago, IL, USA
| | | | - Alex J Barker
- Radiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - James C. Carr
- Radiology, Northwestern University, Chicago, IL, USA
| | - Michael Markl
- Radiology, Northwestern University, Chicago, IL, USA
- Biomedical Engineering, Northwestern University, Evanston, IL, USA
| | - Ann Ragin
- Radiology, Northwestern University, Chicago, IL, USA
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13
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Rivera-Rivera LA. Editorial for "Does the Internal Carotid Artery Attenuate Blood-Flow Pulsatility in Small Vessel Disease? A 7T 4D-Flow MRI Study". J Magn Reson Imaging 2022; 56:536-537. [PMID: 34997661 DOI: 10.1002/jmri.28055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 11/09/2022] Open
Affiliation(s)
- Leonardo A Rivera-Rivera
- Departments of Medicine and Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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14
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Wehrum T, Dragonu I, Strecker C, Hennemuth A, Hennig J, Reinhard T, Harloff A. Influence of Pulse Wave Velocity on Atherosclerosis and Blood Flow Reversal in the Aorta: A 4-Dimensional Flow Magnetic Resonance Imaging Study in Acute Stroke Patients and Matched Controls. J Thorac Imaging 2022; 37:42-48. [PMID: 33492047 DOI: 10.1097/rti.0000000000000580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Aortic stiffness is associated with a higher incidence of cardiovascular events including stroke. The primary aim of this study was to evaluate whether increased pulse wave velocity (PWV), a marker of stiffness, is an independent predictor of aortic atheroma. The secondary aim was to test whether increased PWV reinforces retrograde blood flow from the descending aorta (DAo), a mechanism of stroke. METHODS We performed a cross-sectional case-control study with prospective data acquisition. In all, 40 stroke and 60 ophthalmic patients matched for age and cardiovascular risk factors were included. Multicontrast magnetic resonance imaging (MRI) protocol of the aorta tailored to allow a detailed plaque analysis using 3-dimensional (D) T1-weighted bright blood, T2-weighted and proton density-weighted black blood, and hemodynamic assessment using 4D flow MRI was applied. Individual PWV was calculated based on 4D flow MRI data using the time-to-foot of the blood flow waveform. The extent of maximum retrograde blood flow from the proximal DAo into the arch was quantified. RESULTS PWV was higher in stroke patients compared with controls (7.62±2.59 vs. 5.96±2.49 m/s; P=0.005) and in patients with plaques (irrespective of thickness) compared with patients without plaques (7.47±2.89 vs. 5.62±1.89 m/s; P=0.002). Increased PWV was an independent predictor of plaque prevalence and contributed significantly to a predictor model explaining 36.5% (Nagelkerke R2) of the variance in plaque presence. Maximum retrograde flow extent from the proximal DAo was not correlated with PWV. CONCLUSIONS Aortic stiffness was higher in stroke patients and associated with a higher prevalence of plaques. Increased PWV was an independent predictor of plaque presence. Accordingly, regional PWV seems to be a valuable biomarker for the assessment and management of aortic atherosclerosis. However, no association was found for increased retrograde flow extent from the DAo.
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Affiliation(s)
| | - Iulius Dragonu
- Departments of Neurology
- Radiology-Medical Physics, Medical Center
| | | | - Anja Hennemuth
- Institute for Imaging Science and Computational Modelling in Cardiovascular Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Thomas Reinhard
- Eye Center, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Germany
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15
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Meccanici F, Gökalp AL, Thijssen CGE, Mokhles MM, Bekkers JA, van Kimmenade R, Verhagen HJ, Roos-Hesselink JW, Takkenberg JJM. Male-female differences in acute thoracic aortic dissection: a systematic review and meta-analysis. Interact Cardiovasc Thorac Surg 2021; 34:616-627. [PMID: 34664071 PMCID: PMC8972321 DOI: 10.1093/icvts/ivab270] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/19/2021] [Accepted: 08/16/2021] [Indexed: 12/29/2022] Open
Affiliation(s)
- Frederike Meccanici
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Arjen L Gökalp
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Carlijn G E Thijssen
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands.,Department of Cardiology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Mostafa M Mokhles
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Jos A Bekkers
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | - Roland van Kimmenade
- Department of Cardiology, Erasmus University Medical Centre, Rotterdam, Netherlands.,Department of Cardiology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Hence J Verhagen
- Department of Vascular Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
| | | | - Johanna J M Takkenberg
- Department of Cardiothoracic Surgery, Erasmus University Medical Centre, Rotterdam, Netherlands
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16
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Zhuang B, Sirajuddin A, Zhao S, Lu M. The role of 4D flow MRI for clinical applications in cardiovascular disease: current status and future perspectives. Quant Imaging Med Surg 2021; 11:4193-4210. [PMID: 34476199 DOI: 10.21037/qims-20-1234] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 04/23/2021] [Indexed: 11/06/2022]
Abstract
Magnetic resonance imaging (MRI) four-dimensional (4D) flow is a type of phase-contrast (PC) MRI that uses blood flow encoded in 3 directions, which is resolved relative to 3 spatial and temporal dimensions of cardiac circulation. It can be used to simultaneously quantify and visualize hemodynamics or morphology disorders. 4D flow MRI is more comprehensive and accurate than two-dimensional (2D) PC MRI and echocardiography. 4D flow MRI provides numerous hemodynamic parameters that are not limited to the basic 2D parameters, including wall shear stress (WSS), pulse wave velocity (PWV), kinetic energy, turbulent kinetic energy (TKE), pressure gradient, and flow component analysis. 4D flow MRI is widely used to image many parts of the body, such as the neck, brain, and liver, and has a wide application spectrum to cardiac diseases and large vessels. This present review aims to summarize the hemodynamic parameters of 4D flow MRI technology and generalize their usefulness in clinical practice in relation to the cardiovascular system. In addition, we note the improvements that have been made to 4D flow MRI with the application of new technologies. The application of new technologies can improve the speed of 4D flow, which would benefit clinical applications.
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Affiliation(s)
- Baiyan Zhuang
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Arlene Sirajuddin
- National Heart, Lung and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Shihua Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Minjie Lu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Key Laboratory of Cardiovascular Imaging (Cultivation), Chinese Academy of Medical Sciences, Beijing, China
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17
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van Hout MJ, Dekkers IA, Westenberg JJ, Schalij MJ, Widya RL, de Mutsert R, Rosendaal FR, de Roos A, Jukema JW, Scholte AJ, Lamb HJ. Normal and reference values for cardiovascular magnetic resonance-based pulse wave velocity in the middle-aged general population. J Cardiovasc Magn Reson 2021; 23:46. [PMID: 33866975 PMCID: PMC8054386 DOI: 10.1186/s12968-021-00739-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/15/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Aortic stiffness, assessed through pulse wave velocity (PWV), is an independent predictor for cardiovascular disease risk. However, the scarce availability of normal and reference values for cardiovascular magnetic resonance imaging (CMR) based PWV is limiting clinical implementation. The aim of this study was to determine normal and reference values for CMR assessed PWV in the general population. METHODS From the 2,484 participants of the Netherlands Epidemiology of Obesity (NEO) study that have available CMR-PWV data, 1,394 participants free from cardiovasculard disease, smokers or treatment for diabetes, hypertension or dyslipidaemia were selected (45-65 years, 51% female). Participants were divided into sex, age and blood pressure (BP) subgroups. Normal values were specified for participants with a BP < 130/80 mmHg and reference values for elevated BP subgroups (≥ 130/80 and < 140/90 mmHg; and ≥ 140/90 mmHg). Differences between groups were tested with independent samples t-test or ANOVA. Due to an oversampling of obese individuals in this study, PWV values are based on a weighted analysis making them representative of the general population. RESULTS Normal mean PWV was 6.0 m/s [95% CI 5.8-6.1]. PWV increased with advancing age and BP categories (both p < 0.001). There was no difference between sex in normal PWV, however in the BP > 140/90 mmHg women had a higher PWV (p = 0.005). The interpercentile ranges were smaller for participants < 55 years old compared to participants ≥ 55 years, indicating an increasing variability of PWV with age. PWV upper limits were particularly elevated in participants ≥ 55 years old in the high blood pressure subgroups. CONCLUSION This study provides normal and reference values for CMR-assessed PWV per sex, age and blood pressure category in the general population.
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Affiliation(s)
- Max J van Hout
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Ilona A Dekkers
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Jos J Westenberg
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Martin J Schalij
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Ralph L Widya
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Renée de Mutsert
- Department of Epidemiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Frits R Rosendaal
- Department of Epidemiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Albert de Roos
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - J Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Arthur J Scholte
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Hildo J Lamb
- Department of Radiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands.
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18
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Jarvis K, Soulat G, Scott M, Vali A, Pathrose A, Syed AA, Kinno M, Prabhakaran S, Collins JD, Markl M. Investigation of Aortic Wall Thickness, Stiffness and Flow Reversal in Patients With Cryptogenic Stroke: A 4D Flow MRI Study. J Magn Reson Imaging 2021; 53:942-952. [PMID: 32864836 DOI: 10.1002/jmri.27345] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Stroke etiology is undetermined in approximately one-sixth to one-third of patients. The presence of aortic flow reversal and plaques in the descending aorta (DAo) has been identified as a potential retrograde embolic mechanism. PURPOSE To assess the relationships between aortic stiffness, wall thickness, and flow reversal in patients with cryptogenic stroke and healthy controls. STUDY TYPE Prospective. POPULATION Twenty one patients with cryptogenic stroke and proven DAo plaques (69 ± 9 years, 43% female), 18 age-matched controls (age: 65 ± 8 years, 61% female), and 14 younger controls (36 ± 9 years, 57% female). FIELD STRENGTH/SEQUENCE 1.5T; 4D flow MRI and 3D dark blood T1 -weighted turbo spin echo MRI of the aorta. ASSESSMENT Noncontrast aortic 4D flow MRI to measure 3D flow dynamics and 3D dark blood aortic wall MRI to assess wall thickness. 4D flow MRI analysis included automated quantification of aortic stiffness by pulse wave velocity (PWV) and voxelwise mapping of the flow reversal fraction (FRF). STATISTICAL TESTS Analysis of variance (ANOVA) or Kruskal-Wallis tests, Student's unpaired t-tests or Wilcoxon rank-sum tests, regression analysis. RESULTS Aortic PWV and FRF were statistically higher in patients (8.9 ± 1.7 m/s, 18.4 ± 7.7%) than younger controls (5.3 ± 0.8 m/s, P < 0.0167; 8.5 ± 2.9%, P < 0.0167), but not age-matched controls (8.2 ± 1.6 m/s, P = 0.22; 15.6 ± 5.8%, P = 0.22). Maximum aortic wall thickness was higher in patients (3.1 ± 0.7 mm) than younger controls (2.2 ± 0.2 mm, P < 0.0167) and age-matched controls (2.7 ± 0.5 mm) (P < 0.0167). For all subjects, positive relationships were found between PWV and age (R2 = 0.71, P < 0.05), aortic wall thickness (R2 = 0.20, P < 0.05), and FRF (R2 = 0.47, P < 0.05). Patients demonstrated relationships between PWV and FRF in the ascending aorta (R2 = 0.32, P < 0.05) and arch (R2 = 0.24, P < 0.05). DATA CONCLUSION This study showed the utility of 4D flow MRI for evaluating aortic PWV and voxelwise flow reversal. Positive relationships between aortic PWV, wall thickness, and flow reversal support the hypothesis that aortic stiffness is involved in this retrograde embolic mechanism. LEVEL OF EVIDENCE 2 TECHNICAL EFFICACY STAGE: 1.
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Affiliation(s)
- Kelly Jarvis
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Gilles Soulat
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michael Scott
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, USA
| | - Alireza Vali
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Ashitha Pathrose
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Amer Ahmed Syed
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Menhel Kinno
- Department of Cardiology, Loyola University Medical Center, Maywood, Illinois, USA
| | - Shyam Prabhakaran
- Department of Neurology, University of Chicago Biological Sciences, Chicago, Illinois, USA
| | | | - Michael Markl
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois, USA
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19
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Heidari Pahlavian S, Cen SY, Bi X, Wang DJJ, Chui HC, Yan L. Assessment of carotid stiffness by measuring carotid pulse wave velocity using a single-slice oblique-sagittal phase-contrast MRI. Magn Reson Med 2021; 86:442-455. [PMID: 33543788 DOI: 10.1002/mrm.28677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/14/2020] [Accepted: 12/18/2020] [Indexed: 11/06/2022]
Abstract
PURPOSE Increased arterial stiffness has been shown to be one of the earliest markers of cerebrovascular dysfunction. As a surrogate marker of arterial stiffness, pulse wave velocity (PWV) quantifications are generally carried out on central and peripheral arteries. The purpose of this study was to develop and evaluate an MRI approach to assess carotid stiffness by measuring carotid PWV (cPWV) using a fast oblique-sagittal phase-contrast MRI sequence. METHODS In 29 volunteers, a single-slice oblique-sagittal phase-contrast MRI sequence with retrospective cardiac gating was used to quantify blood velocity waveforms along a vessel segment covering the common carotid artery (CCA) and the internal carotid artery (ICA). The CCA-ICA segment length was measured from a region of interest selected on the magnitude image. Phase-contrast MRI-measured velocities were also used to quantify the ICA pulsatility index along with cPWV quantification. RESULTS The mean value of cPWV calculated using the middle upslope area algorithm was 2.86 ± 0.71 and 3.97 ± 1.14 m/s in young and elderly subjects, respectively. Oblique-sagittal phase-contrast MRI-derived cPWV measurements showed excellent intrascan and interscan repeatability. cPWV and ICA pulsatility index were significantly greater in older subjects compared to those in the young subjects (P < .01 and P = .01, respectively). Also, increased cPWV values were associated with elevated systolic blood pressure (β = 0.05, P = .03). CONCLUSION This study demonstrated that oblique-sagittal phase-contrast MRI is a feasible technique for the quantification of both cPWV and ICA pulsatility index and showed their potential utility in evaluating cerebroarterial aging and age-related neurovascular disorders.
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Affiliation(s)
- Soroush Heidari Pahlavian
- USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.,Department of Neurology, University of Southern California, Los Angeles, California, USA
| | - Steven Yong Cen
- Department of Neurology, University of Southern California, Los Angeles, California, USA
| | - Xiaoming Bi
- Siemens Medical Solutions USA, Inc., Los Angeles, California, USA
| | - Danny J J Wang
- USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.,Department of Neurology, University of Southern California, Los Angeles, California, USA
| | - Helena Chang Chui
- Department of Neurology, University of Southern California, Los Angeles, California, USA
| | - Lirong Yan
- USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.,Department of Neurology, University of Southern California, Los Angeles, California, USA
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20
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Age-related values of aortic pulse wave velocity in healthy subjects measured by Doppler echocardiography. J Hum Hypertens 2021; 35:1081-1087. [PMID: 33414505 DOI: 10.1038/s41371-020-00466-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 11/04/2020] [Accepted: 12/07/2020] [Indexed: 11/08/2022]
Abstract
Aortic pulse wave velocity (aPWV) is a measure of aortic stiffness, which is an indicator of vascular aging and prognostic marker for cardiovascular complications. aPWV can be measured with various methods, but with different reference values depending on the technique used. Therefore, we decided to evaluate age-related values of aPWV, measured by Doppler echocardiography. We included 134 healthy adults (mean age 44.1 ± 13.2 years, 54% of females) divided into five groups based on age decades (D1 21-30 years, n = 29; D2 31-40 years, n = 24; D3 41-50 years, n = 34; D4 51-60 years, n = 25; and D5 61-70 years, n = 22). With the use of a cardiac probe and ECG tracing, ten Doppler waveforms were sequentially recorded, first in the distal aortic arch, and than in the left external iliac artery. Transit time was measured as a delay of the foot of the Doppler waveform in the distal, relative to the proximal location. The distance was measured over the body surface. aPWV was calculated as distance/transit time. Median aPWV in the whole group was 5.05 m/s [4.55-5.99] and did not differ according to sex (females, 5.28 m/s [4.50-6.1] vs. males, 4.95 m/s [4.59-5.77], p = 0.46). Mean aPWV values with 95% confidence intervals (95% CI) for each decade were as follows: D1, 4.54 m/s (4.37-4.72), D2, 4.61 m/s (4.36-4.87), D3, 5.11 m/s (4.89-5.33), D4, 6.04 m/s (5.63-6.45), and D5, 6.77 m/s (6.35-7.19). We report age-related values of aPWV, in a healthy population, measured by Doppler echocardiography. This may be helpful in future research exploring the associations between aortic stiffness, cardiac function, and cardiovascular risk.
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21
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Catapano F, Pambianchi G, Cundari G, Rebelo J, Cilia F, Carbone I, Catalano C, Francone M, Galea N. 4D flow imaging of the thoracic aorta: is there an added clinical value? Cardiovasc Diagn Ther 2020; 10:1068-1089. [PMID: 32968661 DOI: 10.21037/cdt-20-452] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Four-dimensional (4D) flow MRI has emerged as a powerful non-invasive technique in cardiovascular imaging, enabling to analyse in vivo complex flow dynamics models by quantifying flow parameters and derived features. Deep knowledge of aortic flow dynamics is fundamental to better understand how abnormal flow patterns may promote or worsen vascular diseases. In the perspective of an increasingly personalized and preventive medicine, growing interest is focused on identifying those quantitative functional features which are early predictive markers of pathological evolution. The thoracic aorta and its spectrum of diseases, as the first area of application and development of 4D flow MRI and supported by an extensive experimental validation, represents the ideal model to introduce this technique into daily clinical practice. The purpose of this review is to describe the impact of 4D flow MRI in the assessment of the thoracic aorta and its most common affecting diseases, providing an overview of the actual clinical applications and describing the potential role of derived advanced hemodynamic measures in tailoring follow-up and treatment.
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Affiliation(s)
- Federica Catapano
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Giacomo Pambianchi
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Giulia Cundari
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - João Rebelo
- Department of Radiology, Centro Hospitalar São João, Alameda Prof. Hernâni Monteiro, Porto, Portugal
| | - Francesco Cilia
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Iacopo Carbone
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Carlo Catalano
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Marco Francone
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Nicola Galea
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy.,Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
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22
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Soulat G, Jarvis K, Pathrose A, Vali A, Scott M, Syed AA, Kinno M, Prabhakaran S, Collins JD, Markl M. Renin Angiotensin System Inhibitors Reduce Aortic Stiffness and Flow Reversal After a Cryptogenic Stroke. J Magn Reson Imaging 2020; 53:213-221. [PMID: 32770637 DOI: 10.1002/jmri.27279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Blood flow reversal is a possible mechanism for retrograde embolism in the setting of high-risk atherosclerotic plaques in the descending aorta (DAo). Evidence suggests that pulse wave velocity (PWV) is a determinant of blood flow reversal and can be reduced by the destiffening effect of renin-angiotensin system inhibitors (RASI). PURPOSE To evaluate the impact of antihypertensive therapy on in vivo changes in PWV and flow reversal in patients with cryptogenic stroke. STUDY TYPE Prospective. POPULATION Sixteen patients (69 ± 9 years; 10 males) included after cryptogenic stroke. FIELD STRENGTH/SEQUENCE 3T. 4D flow sequence (temporal resolution = 19.6 msec) ASSESSMENT: Patients underwent aortic MRI at baseline and at 6-month follow-up. Patients received standard-of-care antihypertensive therapy that were classified as RASI vs. non-RASI medications (ie, destiffening vs. nondestiffening).We compared aortic PWV, flow reversal fraction (FRF), aortic measurements, cardiac function, and other aortic and cardiac measurements in the antihypertensive therapy groups. STATISTICAL TESTS Two-tailed paired or unpaired Student's t-tests (normal distributions) or Wilcoxon tests (nonnormal distribution). Univariate correlations using Pearson correlation coefficients. RESULTS There was a significant decrease in PWV in the RASI (n = 10) group (9.4 ± 1.6 m/s vs. 8.3 ± 1.9 m/s; P < 0.05), as well as FRF (18.6% ± 4.1% vs. 16.3% ± 4.0%; P < 0.05) between baseline and the 6-month MRI studies. There were no changes in PWV or FRF in the non-RASI (n = 6) group (P = 0.146 and P = 0.32). A decrease in FRF was significantly correlated with a decrease in PWV (r = 0.53; P < 0.05). DATA CONCLUSION The findings of our study suggest that RASI therapy after cryptogenic stroke resulted in a decrease of blood flow reversal and aortic stiffness. EVIDENCE LEVEL 1 TECHNICAL EFFICACY STAGE: 4.
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Affiliation(s)
- Gilles Soulat
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kelly Jarvis
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ashitha Pathrose
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Alireza Vali
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Michael Scott
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois, USA
| | - Amer A Syed
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Menhel Kinno
- Loyola's Center for Heart & Vascular Medicine, Stritch School of Medicine, Loyola University Chicago, Chicago, Illinois, USA
| | - Shyam Prabhakaran
- Neurology, The University of Chicago Biological Sciences, Chicago, Illinois, USA
| | | | - Michael Markl
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.,Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois, USA
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23
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Babici D, Kudej RK, McNulty T, Zhang J, Oydanich M, Berkman T, Nishimura K, Bishop SP, Vatner DE, Vatner SF. Mechanisms of increased vascular stiffness down the aortic tree in aging, premenopausal female monkeys. Am J Physiol Heart Circ Physiol 2020; 319:H222-H234. [PMID: 32530752 DOI: 10.1152/ajpheart.00153.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Protection against increased vascular stiffness in young women is lost after menopause. However, little is known about vascular stiffness in older, premenopausal females, because most of the prior work has been conducted in rodents, which live for only 1-3 yr and do not go through menopause. The goal of the current investigation was to quantitate differences in stiffness down the aortic tree and the mechanisms mediating those differences in older, premenopausal (24 ± 0.7 yr) versus young adult (7 ± 0.7 yr) female nonhuman primates. Aortic stiffness (β), calculated from direct and continuous measurements of aortic diameter and pressure in chronically instrumented, conscious macaque monkeys, increased 2.5-fold in the thoracic aorta and fivefold in the abdominal aorta in old premenopausal monkeys. The aortic histological mechanisms mediating increased vascular stiffness, i.e., collagen/elastin ratio, elastin, and collagen disarray, and the number of breaks in elastin and collagen fibers were greater in the old premenopausal versus young monkeys and greater in the abdominal versus the thoracic aorta and greatest in the iliac artery. In addition, more immature and less cross-linked fibers of collagen were found in the aortas of young females. Aortic stiffness increased in old premenopausal female monkeys, more so in the abdominal aorta than in the thoracic aorta. Histological mechanisms mediating the increased aortic stiffness were augmented in the old premenopausal females, greater in the abdominal versus the thoracic aorta, and greatest in the iliac artery.NEW & NOTEWORTHY This is the first study to examine vascular stiffness down the aortic tree in aging premenopausal females (24 ± 0.7 yr old), whereas prior work studied mainly rodents, which are short-lived and do not undergo menopause. Histological mechanisms mediating vascular stiffness in older premenopausal females increased progressively down the aortic tree, with greater increases in the abdominal aorta compared with the thoracic aorta and with the greatest increases and differences observed in the iliac artery.
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Affiliation(s)
- Denis Babici
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Raymond K Kudej
- Department of Clinical Sciences, Tufts Cummings School of Veterinary Medicine, North Grafton, Massachusetts
| | - Tara McNulty
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Jie Zhang
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Marko Oydanich
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Tolga Berkman
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Koichi Nishimura
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Sanford P Bishop
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Dorothy E Vatner
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
| | - Stephen F Vatner
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers, New Jersey Medical School, Newark, New Jersey
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24
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Abstract
Magnetic resonance imaging (MRI) has become an important tool for the clinical evaluation of patients with cardiac and vascular diseases. Since its introduction in the late 1980s, quantitative flow imaging with MRI has become a routine part of standard-of-care cardiothoracic and vascular MRI for the assessment of pathological changes in blood flow in patients with cardiovascular disease. More recently, time-resolved flow imaging with velocity encoding along all three flow directions and three-dimensional (3D) anatomic coverage (4D flow MRI) has been developed and applied to enable comprehensive 3D visualization and quantification of hemodynamics throughout the human circulatory system. This article provides an overview of the use of 4D flow applications in different cardiac and vascular regions in the human circulatory system, with a focus on using 4D flow MRI in cardiothoracic and cerebrovascular diseases.
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Affiliation(s)
- Gilles Soulat
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Patrick McCarthy
- Division of Cardiac Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | - Michael Markl
- Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
- Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, Illinois 60208, USA
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25
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Pons R, Guala A, Rodríguez-Palomares JF, Cajas JC, Dux-Santoy L, Teixidó-Tura G, Molins JJ, Vázquez M, Evangelista A, Martorell J. Fluid-structure interaction simulations outperform computational fluid dynamics in the description of thoracic aorta haemodynamics and in the differentiation of progressive dilation in Marfan syndrome patients. ROYAL SOCIETY OPEN SCIENCE 2020; 7:191752. [PMID: 32257331 PMCID: PMC7062053 DOI: 10.1098/rsos.191752] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/09/2020] [Indexed: 06/02/2023]
Abstract
Abnormal fluid dynamics at the ascending aorta may be at the origin of aortic aneurysms. This study was aimed at comparing the performance of computational fluid dynamics (CFD) and fluid-structure interaction (FSI) simulations against four-dimensional (4D) flow magnetic resonance imaging (MRI) data; and to assess the capacity of advanced fluid dynamics markers to stratify aneurysm progression risk. Eight Marfan syndrome (MFS) patients, four with stable and four with dilating aneurysms of the proximal aorta, and four healthy controls were studied. FSI and CFD simulations were performed with MRI-derived geometry, inlet velocity field and Young's modulus. Flow displacement, jet angle and maximum velocity evaluated from FSI and CFD simulations were compared to 4D flow MRI data. A dimensionless parameter, the shear stress ratio (SSR), was evaluated from FSI and CFD simulations and assessed as potential correlate of aneurysm progression. FSI simulations successfully matched MRI data regarding descending to ascending aorta flow rates (R 2 = 0.92) and pulse wave velocity (R 2 = 0.99). Compared to CFD, FSI simulations showed significantly lower percentage errors in ascending and descending aorta in flow displacement (-46% ascending, -41% descending), jet angle (-28% ascending, -50% descending) and maximum velocity (-37% ascending, -34% descending) with respect to 4D flow MRI. FSI- but not CFD-derived SSR differentiated between stable and dilating MFS patients. Fluid dynamic simulations of the thoracic aorta require fluid-solid interaction to properly reproduce complex haemodynamics. FSI- but not CFD-derived SSR could help stratifying MFS patients.
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Affiliation(s)
- R. Pons
- Department of Chemical Engineering and Material Sciences, IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - A. Guala
- Hospital Universitari Vall d'Hebron, Department of Cardiology, CIBER-CV, Vall d'Hebron Institut de recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J. F. Rodríguez-Palomares
- Hospital Universitari Vall d'Hebron, Department of Cardiology, CIBER-CV, Vall d'Hebron Institut de recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J. C. Cajas
- Barcelona Supercomputing Center (BSC-CNS), Department of Computer Applications in Science and Engineering, C/Jordi Girona 29, 08034 Barcelona, Spain
- Escuela Nacional de Estudios Superiors, Unidad Mérida, Universidad Nacional Autónoma de México, Carretera Mérida-Tetiz, Km 4, Ucú, Yucatán, 97357, México
| | - L. Dux-Santoy
- Hospital Universitari Vall d'Hebron, Department of Cardiology, CIBER-CV, Vall d'Hebron Institut de recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - G. Teixidó-Tura
- Hospital Universitari Vall d'Hebron, Department of Cardiology, CIBER-CV, Vall d'Hebron Institut de recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J. J. Molins
- Department of Chemical Engineering and Material Sciences, IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
| | - M. Vázquez
- Barcelona Supercomputing Center (BSC-CNS), Department of Computer Applications in Science and Engineering, C/Jordi Girona 29, 08034 Barcelona, Spain
- ELEM Biotech, Calle Rossello 36, 08029 Barcelona, Spain
| | - A. Evangelista
- Hospital Universitari Vall d'Hebron, Department of Cardiology, CIBER-CV, Vall d'Hebron Institut de recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain
| | - J. Martorell
- Department of Chemical Engineering and Material Sciences, IQS School of Engineering, Universitat Ramon Llull, Via Augusta 390, 08017 Barcelona, Spain
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26
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Changes in segmental pulse wave velocity of the thoracic aorta with age and left ventricular remodelling. An MRI 4D flow study. J Hypertens 2020; 38:118-126. [DOI: 10.1097/hjh.0000000000002224] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Manning WJ. Journal of Cardiovascular Magnetic Resonance: 2017/2018 in review. J Cardiovasc Magn Reson 2019; 21:79. [PMID: 31884956 PMCID: PMC6936125 DOI: 10.1186/s12968-019-0594-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 12/14/2022] Open
Abstract
There were 89 articles published in the Journal of Cardiovascular Magnetic Resonance (JCMR) in 2017, including 76 original research papers, 4 reviews, 5 technical notes, 1 guideline, and 3 corrections. The volume was down slightly from 2017 with a corresponding 15% decrease in manuscript submissions from 405 to 346 and thus reflects a slight increase in the acceptance rate from 25 to 26%. The decrease in submissions for the year followed the initiation of the increased author processing charge (APC) for Society for Cardiovascular Magnetic Resonance (SCMR) members for manuscripts submitted after June 30, 2018. The quality of the submissions continues to be high. The 2018 JCMR Impact Factor (which is published in June 2019) was slightly lower at 5.1 (vs. 5.46 for 2017; as published in June 2018. The 2018 impact factor means that on average, each JCMR published in 2016 and 2017 was cited 5.1 times in 2018. Our 5 year impact factor was 5.82.In accordance with Open-Access publishing guidelines of BMC, the JCMR articles are published on-line in a continuus fashion in the chronologic order of acceptance, with no collating of the articles into sections or special thematic issues. For this reason, over the years, the Editors have felt that it is useful for the JCMR audience to annually summarize the publications into broad areas of interest or themes, so that readers can view areas of interest in a single article in relation to each other and contemporaneous JCMR publications. In this publication, the manuscripts are presented in broad themes and set in context with related literature and previously published JCMR papers to guide continuity of thought within the journal. In addition, as in the past two years, I have used this publication to also convey information regarding the editorial process and as a "State of our JCMR."This is the 12th year of JCMR as an open-access publication with BMC (formerly known as Biomed Central). The timing of the JCMR transition to the open access platform was "ahead of the curve" and a tribute to the vision of Dr. Matthias Friedrich, the SCMR Publications Committee Chair and Dr. Dudley Pennell, the JCMR editor-in-chief at the time. The open-access system has dramatically increased the reading and citation of JCMR publications and I hope that you, our authors, will continue to send your very best, high quality manuscripts to JCMR for consideration. It takes a village to run a journal and I thank our very dedicated Associate Editors, Guest Editors, Reviewers for their efforts to ensure that the review process occurs in a timely and responsible manner. These efforts have allowed the JCMR to continue as the premier journal of our field. This entire process would also not be possible without the dedication and efforts of our managing editor, Diana Gethers. Finally, I thank you for entrusting me with the editorship of the JCMR as I begin my 4th year as your editor-in-chief. It has been a tremendous experience for me and the opportunity to review manuscripts that reflect the best in our field remains a great joy and highlight of my week!
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Affiliation(s)
- Warren J Manning
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA.
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28
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Houriez--Gombaud-Saintonge S, Mousseaux E, Bargiotas I, De Cesare A, Dietenbeck T, Bouaou K, Redheuil A, Soulat G, Giron A, Gencer U, Craiem D, Messas E, Bollache E, Chenoune Y, Kachenoura N. Comparison of different methods for the estimation of aortic pulse wave velocity from 4D flow cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2019; 21:75. [PMID: 31829235 PMCID: PMC6907267 DOI: 10.1186/s12968-019-0584-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 10/22/2019] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Arterial pulse wave velocity (PWV) is associated with increased mortality in aging and disease. Several studies have shown the accuracy of applanation tonometry carotid-femoral PWV (Cf-PWV) and the relevance of evaluating central aorta stiffness using 2D cardiovascular magnetic resonance (CMR) to estimate PWV, and aortic distensibility-derived PWV through the theoretical Bramwell-Hill model (BH-PWV). Our aim was to compare various methods of aortic PWV (aoPWV) estimation from 4D flow CMR, in terms of associations with age, Cf-PWV, BH-PWV and left ventricular (LV) mass-to-volume ratio while evaluating inter-observer reproducibility and robustness to temporal resolution. METHODS We studied 47 healthy subjects (49.5 ± 18 years) who underwent Cf-PWV and CMR including aortic 4D flow CMR as well as 2D cine SSFP for BH-PWV and LV mass-to-volume ratio estimation. The aorta was semi-automatically segmented from 4D flow data, and mean velocity waveforms were estimated in 25 planes perpendicular to the aortic centerline. 4D flow CMR aoPWV was calculated: using velocity curves at two locations, namely ascending aorta (AAo) and distal descending aorta (DAo) aorta (S1, 2D-like strategy), or using all velocity curves along the entire aortic centreline (3D-like strategies) with iterative transit time (TT) estimates (S2) or a plane fitting of velocity curves systolic upslope (S3). For S1 and S2, TT was calculated using three approaches: cross-correlation (TTc), wavelets (TTw) and Fourier transforms (TTf). Intra-class correlation coefficients (ICC) and Bland-Altman biases (BA) were used to evaluate inter-observer reproducibility and effect of lower temporal resolution. RESULTS 4D flow CMR aoPWV estimates were significantly (p < 0.05) correlated to the CMR-independent Cf-PWV, BH-PWV, age and LV mass-to-volume ratio, with the strongest correlations for the 3D-like strategy using wavelets TT (S2-TTw) (R = 0.62, 0.65, 0.77 and 0.52, respectively, all p < 0.001). S2-TTw was also highly reproducible (ICC = 0.99, BA = 0.09 m/s) and robust to lower temporal resolution (ICC = 0.97, BA = 0.15 m/s). CONCLUSIONS Reproducible 4D flow CMR aoPWV estimates can be obtained using full 3D aortic coverage. Such 4D flow CMR stiffness measures were significantly associated with Cf-PWV, BH-PWV, age and LV mass-to-volume ratio, with a slight superiority of the 3D strategy using wavelets transit time (S2-TTw).
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Affiliation(s)
- Sophia Houriez--Gombaud-Saintonge
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- ESME Sudria Research Lab, Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | | | - Ioannis Bargiotas
- CMLA, ENS Cachan, CNRS, Université Paris-Saclay, 94235 Cachan, France
| | - Alain De Cesare
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Thomas Dietenbeck
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Kevin Bouaou
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Alban Redheuil
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | | | - Alain Giron
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
| | - Umit Gencer
- Hopital Européen Georges Pompidou, Paris, France
| | - Damian Craiem
- Universidad Favaloro-CONICET, IMeTTyB, Buenos Aires, Argentina
| | | | - Emilie Bollache
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | | | - Nadjia Kachenoura
- Sorbonne Université, INSERM, CNRS, Laboratoire d’Imagerie Biomédicale (LIB), 75006 Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
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29
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Ko S, Lee J, Song S, Kim D, Lee SH, Cho JH. Patient-specific Hemodynamics of Severe Carotid Artery Stenosis Before and After Endarterectomy Examined by 4D Flow MRI. Sci Rep 2019; 9:18554. [PMID: 31811162 PMCID: PMC6897954 DOI: 10.1038/s41598-019-54543-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 08/28/2019] [Indexed: 11/09/2022] Open
Abstract
Carotid endarterectomy (CEA) influences the carotid endoluminal anatomy, which results in hemodynamic changes before and after surgery. We investigated the hemodynamics of severe carotid artery stenosis before and after conventional endarterectomy with/without patch repair. An in vitro experiment utilizing carotid phantoms, which underwent a procedure that emulated CEA with/without the patch repair, was performed with a high-spatiotemporal resolution using 4D flow MRI. We evaluated an abnormal region of carotids, which consists of the normalized time-averaged wall shear stress (NTA|WSS|) and the oscillatory shear index (OSI), to account for continuous high-shear regions (high NTA|WSS| and low OSI) and chaotic low-shear regions, i.e., stenosis-prone regions (low NTA|WSS| and high OSI). The use of normalized hemodynamic parameters (e.g., NTA|WSS|) allowed comparison of diverse cases with different conditions of hemodynamics and vessel geometry. We observed that the stenosis-prone regions of the carotids with patches were noticeably larger than the corresponding regions in no-patch carotids. A large recirculating flow zone found in the stenosis-prone region of the internal carotid artery (ICA) of the postoperative carotids with patches partially blocks the flow path into ICA, and consequently the flow rate was not recovered after surgery unlike an expectation.
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Affiliation(s)
- Seungbin Ko
- Department of Mechanical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Jeesoo Lee
- Department of Mechanical Engineering, Hanyang University, Seoul, 04763, South Korea. .,Institute of Nano Science and Technology, Hanyang University, Seoul, 04763, South Korea.
| | - Simon Song
- Department of Mechanical Engineering, Hanyang University, Seoul, 04763, South Korea. .,Institute of Nano Science and Technology, Hanyang University, Seoul, 04763, South Korea.
| | - Doosang Kim
- Department of Thoracic and Cardiovascular Surgery, Veterans Health Service Medical Center, Seoul, 05368, South Korea.
| | - Sang Hyung Lee
- Department of Neurosurgery, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, 07061, South Korea
| | - Jee-Hyun Cho
- Bioimaging Research Team, Korea Basic Science Institute, Cheongju, 28119, South Korea
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30
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Wilson JS, Taylor WR, Oshinski J. Assessment of the regional distribution of normalized circumferential strain in the thoracic and abdominal aorta using DENSE cardiovascular magnetic resonance. J Cardiovasc Magn Reson 2019; 21:59. [PMID: 31522679 PMCID: PMC6745772 DOI: 10.1186/s12968-019-0565-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 07/23/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Displacement Encoding with Stimulated Echoes (DENSE) cardiovascular magnetic resonance (CMR) of the aortic wall offers the potential to improve patient-specific diagnostics and prognostics of diverse aortopathies by quantifying regionally heterogeneous aortic wall strain in vivo. However, before regional mapping of strain can be used to clinically assess aortic pathology, an evaluation of the natural variation of normal regional aortic kinematics is required. METHOD Aortic spiral cine DENSE CMR was performed at 3 T in 30 healthy adult subjects (range 18 to 65 years) at one or more axial locations that are at high risk for aortic aneurysm or dissection: the infrarenal abdominal aorta (IAA, n = 11), mid-descending thoracic aorta (DTA, n = 17), and/or distal aortic arch (DAA, n = 11). After implementing custom noise-reduction techniques, regional circumferential Green strain of the aortic wall was calculated across 16 sectors around the aortic circumference at each location and normalized by the mean circumferential strain for comparison between individuals. RESULTS The distribution of normalized circumferential strain (NCS) was heterogeneous for all locations evaluated. Despite large differences in mean strain between subjects, comparisons of NCS revealed consistent patterns of strain distribution for similar groupings of patients by axial location, age, and/or mean displacement angle. NCS at local systole was greatest in the lateral/posterolateral walls in the IAAs (1.47 ± 0.27), medial wall in anteriorly displacing DTAs (1.28 ± 0.20), lateral wall in posteriorly displacing DTAs (1.29 ± 0.29), superior curvature in DAAs < 50 years-old (1.93 ± 0.22), and medial wall in DAAs > 50 years (2.29 ± 0.58). The distribution of strain was strongly influenced by the location of the vertebra and other surrounding structures unique to each location. CONCLUSIONS Regional in vivo circumferential strain in the adult aorta is unique to each axial location and heterogeneous around its circumference, but can be grouped into consistent patterns defined by basic patient-specific metrics following normalization. The heterogeneous strain distributions unique to each group may be due to local peri-aortic constraints (particularly at the aorto-vertebral interface), heterogeneous material properties, and/or heterogeneous flow patterns. These results must be carefully considered in future studies seeking to clinically interpret or computationally model patient-specific aortic kinematics.
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Affiliation(s)
- John S. Wilson
- Department of Biomedical Engineering and Pauley Heart Center, Virginia Commonwealth University, P.O. Box 980335, Richmond, VA USA
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA USA
| | - W. Robert Taylor
- Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA USA
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA USA
- Division of Cardiology, Department of Medicine, Atlanta VA Medical Center, Decatur, GA USA
| | - John Oshinski
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA USA
- Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA USA
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31
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Validation of simple measures of aortic distensibility based on standard 4-chamber cine CMR: a new approach for clinical studies. Clin Res Cardiol 2019; 109:454-464. [PMID: 31302712 PMCID: PMC7098938 DOI: 10.1007/s00392-019-01525-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 07/02/2019] [Indexed: 02/05/2023]
Abstract
Objective Aortic distensibility (AD) represents a well-established parameter of aortic stiffness. It remains unclear, however, whether AD can be obtained with high reproducibility in standard 4-chamber cine CMR images of the descending aorta. This study investigated the intra- and inter-observer agreement of AD based on different angles of the aorta and provided a sample size calculation of AD for future trials. Methods Thirty-one patients underwent CMR. Angulation of the descending aorta was performed to obtain strictly transversal and orthogonal cross-sectional aortic areas. AD was obtained both area and diameter based. Results For area-based values, inter-observer agreement was highest for 4-chamber AD (ICC 0.97; 95% CI 0.93–99), followed by orthogonal AD (ICC 0.96; 95% CI 0.91–98) and transversal AD (ICC 0.93; 95% CI 0.80–97). For diameter-based values, agreement was also highest for 4-chamber AD (ICC 0.97; 95% CI 0.94–99), followed by orthogonal AD (ICC 0.96; 95% CI 0.92–98) and transversal AD (ICC 0.91; 95% CI 0.77–96). Bland–Altman plots confirmed a small variation among observers. Sample size calculation showed a sample size of 12 patients to detect a change in 4-chamber AD of 1 × 10−3 mmHg−1 with either the area or diameter approach. Conclusion AD measurements are highly reproducible and allow an accurate and rapid assessment of arterial compliance from standard 4-chamber cine CMR. Graphic abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s00392-019-01525-8) contains supplementary material, which is available to authorized users.
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32
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Yuan X, Nienaber C. Aortic imaging and biomechanics in Marfan syndrome: keep it simple but not too simple. Eur Heart J 2019; 40:2055-2057. [PMID: 31114857 DOI: 10.1093/eurheartj/ehz315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Xun Yuan
- Cardiology and Aortic Centre, Royal Brompton and Harefield Hospital NHS Foundation Trust, London, UK.,Department of Cardiology, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, UK
| | - Christoph Nienaber
- Cardiology and Aortic Centre, Royal Brompton and Harefield Hospital NHS Foundation Trust, London, UK.,Department of Cardiology, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, UK
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33
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Harloff A, Hagenlocher P, Lodemann T, Hennemuth A, Weiller C, Hennig J, Vach W. Retrograde aortic blood flow as a mechanism of stroke: MR evaluation of the prevalence in a population-based study. Eur Radiol 2019; 29:5172-5179. [PMID: 30877458 DOI: 10.1007/s00330-019-06104-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Retrograde blood flow from complex atheroma in the descending aorta (DAo) has only recently been described as a potential mechanism of stroke. However, prevalence of this mechanism in the general population and the exact factors influencing stroke risk are unclear. METHODS One hundred twenty-six consecutively recruited inhabitants of Freiburg, Germany, between 20 and 80 years of age prospectively underwent 3-T MRI. Aortic plaque location and thickness were determined by 3D T1 MRI (1 mm3). 4D flow MRI (spatial/temporal resolution 2 mm3/20 ms) and dedicated software were used to determine prevalence and extent of flow reversal and potential embolization from DAo plaques. Flow was correlated with baseline characteristics and echocardiographic and MRI parameters (aortic diameter, wall thickness, and pulse wave velocity). RESULTS The maximum length of retrograde blood flow connecting the DAo with the left subclavian artery (LSA) increased from 16.1 ± 8.3 mm in 20-29-year-old to 24.7 ± 11.7 mm in 70-80-year-old subjects, correlated with age (r = 0.37; p < 0.001), and was lower in females (p = 0.003). Age was the only independent predictor of increased flow reversal. Complex DAo plaques ≥ 4-mm thickness were found in eight subjects (6.3%) and were connected with the LSA, left common carotid artery, and brachiocephalic trunk in 8 (100%), 1 (12.5%), and 0 (0%) cases, respectively. CONCLUSIONS Retrograde blood flow from the DAo was very frequent. However, potential retrograde embolization was rare due to the low incidence of complex DAo plaques. The magnitude of flow reversal and prevalence of complex atheroma increased with age. Thus, older patients with aortic atherosclerosis are especially vulnerable to this stroke mechanism. KEY POINTS • 4D flow MRI allows in vivo visualization and quantification of individual and three-dimensional blood flow patterns within the thoracic aorta including retrograde components. • This population-based study showed that blood flow reversal from the proximal descending aorta to the brain-supplying great arteries is very frequent and able to reach all brain territories. The extent of such flow reversal increases with age and with the extent of aortic atherosclerosis. • The combination of blood flow reversal with plaque rupture in the proximal descending aorta constitutes a potential stroke mechanism that should be considered in future trials and in the management of stroke patients in clinical routine.
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Affiliation(s)
- Andreas Harloff
- Department of Neurology and Neurophysiology, Medical Center, University of Freiburg, Breisacherstr. 64, 79106, Freiburg, Germany. .,Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Paul Hagenlocher
- Department of Neurology and Neurophysiology, Medical Center, University of Freiburg, Breisacherstr. 64, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thomas Lodemann
- Department of Neurology and Neurophysiology, Medical Center, University of Freiburg, Breisacherstr. 64, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Anja Hennemuth
- Institute for Cardiovascular Computer-Assisted Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Cornelius Weiller
- Department of Neurology and Neurophysiology, Medical Center, University of Freiburg, Breisacherstr. 64, 79106, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jürgen Hennig
- Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Department of Diagnostic Radiology, MR Physics, Medical Center - University of Freiburg, Freiburg, Germany
| | - Werner Vach
- Institute for Medical Biometry and Statistics, Medical Faculty and Medical Center, University of Freiburg, Freiburg, Germany.,Department of Orthopaedics and Traumatology, University Hospital Basel, Basel, Switzerland
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